Automatic weight recording system



Jan. 12, 19 3- E. w. SCHELLENTRAGER 2,307,961

AUTOMATIC WEIGHT RECORDINQ SYSTEM Filed Feb. 15, 1941 I CONTROLLINGVALVE DOOR OPERATOR! 5 mg 3 u-1 J] u? s a E [I 9 0 PREssuRE REsERvolR 9WEIGHT RECORDER b WEIGHT REcoRoER con. 11 -2| 40 vs |s\ a;

' 23 I TIME DELAY I RELAY 2o FIG-2 INVENTOR- EUGENE w. SCHELLENTRAGERATTO R N EYS Patented Jan. 12, 1943 2,307,961 AUTOMATIC WEIGHT RECORDINGSYSTEM Eugene W. Schellentrager, Shaker Heights, Ohio,

assignor to The Atlas Bolt & Screw Company,

Cleveland, Ohio, a

corporation of Ohio Application February 15, 1941, Serial No. 379,113

5 Claims.

This invention relates to weight recording means for dump cars and moreparticularly to improvements in such recording means whereby the recordis made automatically upon initiation of a car dumping operation andclose to the control valve 4 with the conduit 6a connecting motors 8 andI of sufficient length or restriction so that pressure does not build upto operate the motor I until a safe period after the wherein the 5servomotor B has been energized or actuated. If record is unaffected byfurther manipulation of necessary or desirable the invention disclosedand the car dumping equipment, until after the lapse claimed in my abovementioned patent may be inof a reasonable time delay period. corporatedhere to insure that the motor I dfoes An object of the present inventionis to make not operate unt l a prede e mi e p o a e a recordautomatically before dumping a loaded 10 the ervo o o 8 a beenenergized- Each of car and to prevent action of the weight recording theservomotors 8 controls a normally open switch apparatus which would marthe record if the 8a which is adapted, When Closed, o C mD ete dumpingmechanism is rapidly energized and dean electrical circuit between theelectric supply energized for the purpose of banging the dumplines L1and L2. This circuitis from L1 through ing doors to free the car of itscontents. l ne n, 0 ll, line normally fil switehzliii Other objects andadvantages of the invention and line l4, and also from line by line willbe apparent from the accompanying drawcoil l8 and line I9, to L2. CoilsH and I8 are thus ing and specification and the essential featuressimultaneously energized. The coil ll serves as thereof Will besummarized in the claims. the operating coil for the weight recordingmeans, In the drawing, Fig. 1 is a diagrammatic view, a d g r y b in FAS before Stated, illustrating one embodiment of the invention as thisWeight recording means ay b of y Suitapplied to a dumping scale car;Fig. 2 is a detail able form designed upon energization of coil H toview illustrating the weight recording Inechainstantaneously produce butone record, WithOll nism; and Fig. 3 is a detail view of the car doorcontinuance or repetition of the record until the operating mechanism.coil is again energized. In other words, it is of The invention heredisclosed has many useful the impact Variety. Fig- 2 i lustgag gs t as othe applications, for example, in connection with fO m ShOWn n Sa Pa e 2t0 Which dumping scale cars such as are used for loading refer nce maybe had if desirable necessarythe skip hoist when chargingJolastfurnaces, or AS us ed, t e 0011 H actuates a pivoted for any otheroperations where mixed loads are armature 25 connected by a link 6 to ap vot d delivered to a receiver and where it is desired to arm 21,motion of which is Communicated to the automatically produce a record ofthe Weight of bars 8 be w W h ra e s the Stylus 29 adap all material inthe car before the same is dumped. d t n a e the p p r r h r recordsheet 3 A more complete description of equipment of this Spr a bi ses hea matur lev r 25 upwardly sort designed for use with my improved controland spring 32 exerts li e e f ct po a apparatus may be found in mypatent for Weight while the lost motion, at 33, between arm 21 and gezcardgilnsg meichanism for dump cars, No. two nuts 34 on the link 26,produces the impact gran ed April 8, 1941, and further deeffect, causingoverthrow of the s ylus, when opscriptionis thought unnecessary here, asthis inerated, to produce a single recording mark, and vention involvesthe control mechanism rather enabling it to immediately retire from therecord than the detalle the ar and the Weight resheet, even though thecoil ll remains energized. corder. The weighing and recording devicesmay Thus a Single k or puncture is produced on be of the form shown mPatent 132?)567 the sheet for each energization of coil II, with nogranted February to Samson Wnght continuance of the record mark so longas the coil although other recording apparatus may be remains energizedciltiilsizaeg; as will be understood by those skilled in Coil H alsoServes another purpose, tmwit, to In a is illustrated for the purpose ofcontrolling the t d f b y d car dumping doors a on car A. Pressure fluidis 1 5' m 1 t g Z f a lmenp 10 supplied to these motors (one for eachdoor) from 1 1S es 57205111 B Wi y P a pressure fluid reservoir 2 by Wayof conduit 3 switch [5 against the e ect of its biasing spring and anengineers brake valve 4 which is of the thus completmg clrcult from L1by wlre f u w type adapted to supply pressure fluid sw tch l5, and wirell to the point All, from wh ch through conduit 5 or 6 to either end ofmotor I pomt current may flow through @011 and mm or to exhaust pressurefrom either end through to L2, and also, 'by W re 2|, to wire l0,through the exhaust outlet 7. A relay 8 is provided in each 6011 l l andthence t0 When the Current p y of these systems responsive to movementof the by Wire fails on account 0f Opening of t e control valve 4. Insome cases it is sufficient as w h 8 as occurs wh n h nsi r valve 4indicated here to place the relay servomotor 8 is operated repeatedly tobang the doors for the purpose of shaking loose any stick'y load in thecar.

The time delay relay 2% includes an armature 22 movable in response toenergization of coil l8 and the movement of which downwardly isunretarded but which in an upward direction is retarded by the dashpot23. Upon completion of the upward travel of the armature 22, afterenergization of coil 18, the abutment 22a of the armature opens switch53. This of course will deenergize coil H permitting switch E to openwhich in turn deenergizes coil l8 and permits switch :3 to again move toclosed position. All parts are now restored to their original positions,so that the next operation of one of the engineers valves 3 againactuates a relay 8, 8a, thus causing the. weight recording mechanism toproduce another record, which again cannot be repeated until after thelapse of the time delay period determined by dashpot 23.

Manual means is provided including line 24 and switch 25 for energizingthe operating coil ll for the weight recording means whenever desired.

The operation of my improved device is as follows: The dump car A isloaded with material and if the weights of various part-loads are to berecorded, then the switch 25 is closed by hand as each differentmaterial is added to the car. The completely loaded car is then moved toa desired dumping point where at least one of the valves 4 ismanipulated to supply pressure fluid to one end of motor 6 to causeopening of the car dumping door a. Prior to the building up of sufdcientfiuid pressure to cause this dumping operation, however, the servomotor8 will beactuated to close the normally open first relay switch 811.This energizes the second relay coil I l causing a record of the totalweight in the car. Atthe same time the maintaining circuit throughswitch it is closed thus holding the coil H energized and at the sametime energizing coil I8 to start the time delay relay in operation. Theoperator may now manipulate the valve 4 to provide reciprocatingmovements of motor I to shake the car doors if necessary to dislodgematerial during the dumping operation. If it were not for themaintaining circuit through the coil H, and the fact that the recorderoperated by that coil produces but one instantaneous record each timethe coil is energized, each manipulation of valve 4 with its consequentopening and closing of the switch 8a would cause another actuation ofthe operator for the weight recording means so that an improper andunsatisfactory record would be made. By my improved apparatus, however,the weight recorder is held unafi'ected during this period because ofthe maintaining circuit holding coil H energized. Upon the lapse of apredetermined time the time delay relay 26 opens switch it to deenergizeall circuits and to permit the parts to return to their originalpositions ready for another operation. Obviously the time period set foroperation of the time delay relay 20 is sufficient to permit any desiredmanipulation of the doors during the car dumping operation.

What I claim is:

1. Apparatus of the character described, comprising the combination witha car having weight recording apparatus and a car dumping door and powermeans for opening said door, of a control member for said power means, arelay for operating .said weight recording apparatus, means forinitially energizing said relay by movement of said control member, andmeans established by said last named means for holding said relayenergized independently of repeated operation of said control member.

2. Apparatus of the character described, comprising the combination witha car having weight recording apparatus and a car dumping door and powermeans for opening said door, of a control member for said power means, arelay for operating said weight recording apparatus, means for initiallyenergizing said relay by movement of said control member, meansestablished by said last named means for holding said relay energizedindependently of repeated operation of said control member, and timedelay means for deenergizing' said relay energizing means.

3. Apparatus for automatically recording varying weights, including acar adapted to receive loads of different weights and provided with arecorder for making a record of said weights, power means for dumpingsaid car, power supply means, an operative connection therefrom to saidpower means and including an operator operated controller, a first relayoperable in response to operation of said controller, a second relay foroperating said recording means operable in response to operation of saidfirst relay, a power circuit independent of said first relay,established by actuation of said first relay, and said circuit having anoperative connection with said second relay for holding the latterunaffected by further actuation of said first relay.

4. Apparatus for automaticaliy recording varying weights, including acarjadapted to receive loads of different weights and provided with arecorder for making a record of said weights, power means for dumpingsaid car, power supply means, an operative connection therefrom to saidpower means and including an operator operated controller, a first.relay operable in response to operation of said controller, a secondrelay for operating said recording means operable in response tooperation of said first relay, a power circuit independent of said firstrelay established by actuation of said first relay, said circuit havingan operative connection with said second relay for holding the latterunaffected by further actuation of said first relay, and time delaymeans for opening said circuit.

5. Apparatus of the character described, comprising the combination of adumping car having weight recording means and power means for dumpingsaid car, control means for said power means, relay means energized byactuation of said control means and adapted when energized to produceone operation of said weight recording means, holding means operated bysaid relay means for maintaining said relay means energized and therebyineffective to produce a second operation of said weight recordingmeans, and time delay means also energized by said relay means andarranged after the lapse of a time delay period to become effective uponsaid holding means to deenergize the relay means and thereby prepare itfor another operation.

EUGENE W. SCHELLENTRAGER.

